Drawing board and appliances.



Patented Aug. l9, I902. P. SBHLACHTEIL Sn. & A. w. ALLEN.

DRAWING BOARD AND APPLIANCES.

(Application fllad Feb. 11, 1902.)

(No Modl.)

UNITED STATES PATENT OFFICEQ .PHILIPP SOHLAOHTER, SR, AND ALONZO W. ALLEN OF STREATOR,

ILLINOIS, ASSIGNORS OF ONE- JR, OF S'IREATOR, ILLINOIS;

THIRD r0 PHILLIPSCHLAOHTER,

. DRAWING- BOARD AND APPLIANCES.

SPECIFICATION forming part of Letters Patent N 0. 707,165, dated August 19, 1902.

Application filed February 11, 1902. Serial No- 93,585. (No model.)

To all whom it may concern:

Be it known that we, PHILIPP SCHLAOHTER, Sr., and -ALONZO W. ALLEN, citizens of the United States, residing at Streator, in the county of'Lasalle and State of Illinois, have invented new and useful Improvements in With the foregoing in mind theinvention' will be fully understood from the following description and claims when taken inconjunction with the accompanying'drawings, in which- Figure 1 is a plan view of a drawing-board equipped with our improvements; Figs. 2

and 3, enlarged detail sections taken in theplanes indicated by the lines 2 2 and 3 3, re-

spectively, of Fig. 1; and Fig. 4, a plan view. of the spring forming part of the improve -ments removed, and'Figr5 a detail of a modi:

fication. 7

Similar letters of referencedesignate correspondingparts in-all the views of the drawings, referring to which- Ais a drawing-board, which is peculiar, in that it has a' groove or way or adjacent to one edge and a straight edge I) overhanging the.

BisaslidemovableontheboardA. This I slide preferably. comprises a bar g, a head'f,

of greater thickness than the bar, so as to extend above and below the same, and a brace 9', corresponding in .thickness-to the bar 9 and interposed between the same and the head f. The head fis preferably provided at its ends with bifurcations in which ends This construction is of the bar 9 and brace g are securedby glue or other means, and the opposite nd of the brace g is connected to the bar 9 by glue or other means. Said head f is arranged paral- .lel to and adapted to engage the'straight edge I) after the manner best shown in Fig. 2, while the bar g-is preferably arranged at an angle-of forty-five degrees to the head and is of a length to reach across the board A, asshown. I i

O is a spring, which preferably comprises an intermediate loop it, let into a recess '5 in the inner side of. thehead f of slide B, and

iarms j, extending in opposite directionsfrom the loop and terminating in books 7c, disposed in the groove a and engaging the aunder side of the inner portion of the straight edge I),

andD is apin removably arranged in coincident apertures Zof the slide-head fand extending through the loop h ofspring O.

When the slide B rests on theboardAwith .itshead f in engagementwith: the straight edge b andthe'spring O is connectedtos'aid headof the Slld6iby thepinD and rests with its-hooks-kinathe' groove wand in engage- "n1ent with the straight edge I), asbest shown in Figs. 2 and 3, itwill be observedlthatthe' spring will operate to-yieldingly pressv the head f against-the straight edge?) and'thereby hold theslide 'B to, and againstl casual movement on the board, and this without preventing or rendering difficnlt the necessary adjustment of the slide along the board by the draftsman. 1 I

In practice when itis desired to draw hori-, zontal lines an ordinary triangle -is placed and held against the edge of the bar g, as shown by the lower dotted lines in Fig. 1, while when it is desired to draw vertical lines the triangle is placed and held against the that our improvements when used intconjunction with an-ordinary triangle'are'calculated to e nable a draftsman tomake hori- 5 zontal and vertical lines quickness; I 7

.When it is desired to work the triangle at" the right of the slide B instead of at the left thereof, the slideis reversed-r3. e, the pin D with great ease and Ice is removed, the slide is drawn out of engagement with the loop of spring 0 and turned over and placed again in engagement with the loop of the spring, and the pin is replaced in the slide and spring-loop. From this it will be appreciated that the reversal of the slide does not entail the disconnection of the spring from the board, and hence may be quickly and easily accomplished.

We have entered into a detailed description of the construction and relative arrangement of parts embraced in the present and preferred embodiment of ourinvention in order to impart a full, clear, and exact understanding of the same. be understood as confining ourselves to such specific construction and arrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of our claims.

The strip a, Fig. 5, is hinged at each end of the board and is provided with a pin 1) for the engagement of a hook b by means of which itis normally held in the position shown by full lines. When the strip 0 is released from the fastener and swung into the position shown by dotted lines in Fig. 5, paper, such as used for large drawings and mapwork, may be passed between the strip and board, and the surplus of such paper may be rolled up underneath the table.

Having described our invention, What we claim is 1. The combination of a drawing-board having a groove and a portion overhanging said groove, a slide arranged on the board and having a head bearing against one edge of the portion overhanging said groove, and a spring connected to the head of the slide and having a portion arranged below and in engagement with the portion of the board which overhangs the groove so as to hold the slide down on the board.

2. The combination of a drawingboard We do not desire, however, to

having a groove and a portion overhanging the same, a slide arranged on the board and having a head bearing against one edge of the portion overhanging said groove, and a spring connected at an intermediate point of its length to the head of the slide, and having oppositely-extending arms disposed in the groove of the board and terminating in hooks engaging the portion of the board which overhangs said groove.

3. The combination of a drawing-board having a groove and a portion overhanging the same, a slide arranged on the board and having a head bearing against one edge of the portion overhanging said groove, and also having a recess in the inner side of the head, and an aperture intersecting said recess, a spring having a loop disposed in the recess of the slide-head, and arms'extending in 0pposite directions from the loop and disposed in the groove of the board and terminating in hooks engaging the portion of the board which overhangs the groove, and a removable pin resting in the aperture-of the slidehead and the loop of the spring.

4. An attachment for drawing-boards comprising a strip having a groove, a straight edge connected to the strip and overhanging the groove thereof, a slide having a head bearing against the straight edge, and a spring connected at an intermediate point of its length to the head of the slide and having oppositely-extending arms disposed in the groove of the strip and terminating in hooks engaging the portion of the straight edge which overhangs said groove.

In testimony whereof we have hereunto set our hands in presence of two subscribing Wit- HBSSGS.

PHILIPP SOHLACHTER, SR. ALONZO W. ALLEN. Witnesses:

LOUISE FRIEBEL, J EssIE M. KELLER. 

